Trimming-machine.



JJP. WEiS.

TRIMMING MACHENE. 4 APPLICATION man SEPT. 1. 1911.

Patented Oct. 5,1915.

3 SHEETS-SHEET I.

' 1. P. was.

TRIMMING MACHINE. APPLICATION FILED SEPT. I. 1911- Patented Oct. 5,1915. 3 SHEETS-SHEET 2.

WITNESSES A 7 M515 Y.

1. P. WEIS. TRIMMING MACHINE.

APPLICATION FILED SEPT- 1. NI 1-.

135,534. Patented (m. 5, 1915.

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JOHN P. WEIS, 0F NYACK, NEW YORK, AS SIGNOR, BY MES NE ASSIGNMENTS, TOMETROPOLITAN SEWING MACHINE COMPANY, A CORPORATION OF NEW YORK.

T'RIMMING-MACHINE.

To all whom itm-ay concern:

Be it known that I, JOHN P. Wins, a citizenof the United States,residing in Nyack, county of Rockland, and State of New York, haveinvented a new and useful Im provement in Trimming-Machines, of whichthe following is a description.

This invention relates to sewing machines and, particularly, to trimmingmechanism which may be thrown into and out of operation at the will ofthe operator without stopping'the machine and without affecting theoperation of the stitching mechanism.

An object of my invention is to provide a trimming mechanism wherein thetrimmerblade may be shifted into and out of trimming position at thewill of the operator without stopping the trimmer actuating means; toprovide means whereby the trimmer may be depressed below the work-plateof the machine so as to remove the same for interference with the workwhen trimming is not desired; and to provide-a trimming mechanismwherein the trimmer-blade is driven from or supported by some operatingpart of the machine so that while the blade may be thrown from actionthe sup porting or actuating mechanism may continue in operation.

\Vith the above objects in view and others which will be detailed duringthe course of thisflescription, my invention consists in the parts,features, elements and combinations of elements, as hereinafter claimed.

In order that my invention may be fully understood, I have provideddrawings wherein Figure 1 is a front elevation of a machine embodying myinvention; Fig. 2 is an end elevation of my trimming mechanism with thedriving-shaft, bed-plate and clothplate in section; Fig. 3 is a top planview of the lower portion of Fig. 2', "in, those parts which are locatedbelow the cloth-plate; Fig. 4 is a view similar to Fig. 2 showing theparts in a different position of adjustment; Fig. 5 is a section takensubstantially on the line 5--'5 of Fig. 3; Fig. 6 is a front elevationof Fig. 4; and Fig. 7 is a detail in Patented Oct. 5, 1915.

I Original application filed April 23, 1903, Serial No. 153,908. Dividedand this application filed September 1.

Serial No. $47,192.

elevation and section of the ledger-blade and its supporting means.

As set forth in m patent granted Dec. 16, 1913, N0. 1,087,79 of whichthis case is a division, the machine is constructed for the purpose ofattaching a tape to certain portions of the body of a coat or likegarment; that is to say, mens coats are ordinarily provided with astiffening in the breast portions thereof, and to prevent the coat fromsagging or wrinkling, and to preserve the curvature thereof along thefront edge, it is necessary to apply, a tape of heavy material to thestiffening so as to support the weight of the coat. And, in order toproperly impart the requisite curvature and maintain the proper relationof the stiffening and coat-material, it is-necessarv to attach the tapeunder tension, or to full or to stretch the material of the coat uponthe tape and stiffening. Heretofore, this operation has been doneentirely by hand and has proven a tedious, lengthy and laboriousoperation. And certain portions of the garment, around its edges. haveto be-trimmed while other portions do not have to be trimmed; and,heretofore, it has been necessary, in passing from the portion to betrimmed to the portion not to be trimmed, to stop the machine and throwthe cutter out of operation. Obviously, this is algreat waste of timeand involves a great expense.

By the machine illustrated and now to be described, the several objectsabove noted are fully secured and the operation and functions areaccurately and properly performed.

Referring to the drawings, the numeral 1 is the bed-plate; 2 thecloth-plate; 3 the driving-shaft journaled between the two plates andcarrying'at its forward end, as is usual, anv suitable means foractuating the looper andfeeding mechanisms. The shaft also carries theeccentric {l' surrounded by the strap .5 at one end and connected -atits upper end to an extension 6 of a needle-lever 7 journaledat 8 to thearm 9 of the machine and .having its depending portion v;10 pivotallyconnected to the looper-rod 11 all as usual. The needlelever drives theneedle-bar connection 13 said bar reciprocating in the head 14 of the-machine, 15 being the needle held in said 'bar in usual manner. Thepresser-bar 16 has the foot-shank 17 connected thereto, the bar 16operating in the head of the machine beside the needle-bar.

The feed mechanism may be such as shown in my aforesaid application andthe stitchforming mechanism is of the chain-stitch variety.

- Secured to the bed-plate 1, see particularly Figs. 3, 5 and 6, is anangular bracket 18, by means of a screw 19, the same affording ajournal-bearing for the shaft 20, which at its forward end has securedthereto an arm 21, having connected thereto a link 22,'the upper end ofwhich is connected to the rear end of the lever 23 carry ing a'pin 24journaled in a bearing 25 formed on or connected to an eccentric strap26 surrounding an eccentric 27 carried near the forward end of the shaft3. The rear end of the eccentric strap carries a pin or bolt 28swiveling therein, said bolt being suitably connected to a shaft 29passing through bearing 30 to the front of the machine at which pointsaid shaft supports a looper-carrier 31 carrying a chain-stitch loopernot shown but quite usual in these machines. It should be noted that theeccentric 27 strap 26 and shaft 29 are parts of the looper mechanism bywhich the looper is given its lateral vibration, or needle avoidingmovement; and this looper mechanism constitutes the constantly movingpart of the machine, when it is in operation, to which the trimmer hasbeen connected for the purpose of my invention as stated. The forwardend of the eccentric strap is enlarged and provided with anangularsocket 32 for the reception of a holder 33 for the trimmer-blade34, the holder being made angular, as shown in Fig. 6, and the verticalportion 35 being retained in thesocket 32 by means of a clampingscrew36passing through the two parts of the forward end of the eccentric strapwhich is provided with a saw-cut as at 37 to provide the clam ingaction. This construction makes a diam for retaining the trimmer-holderfrom lateral movement in the socket but permits it to have verticalmovements therein. The trimmer holder is also provided with a saw-cut38providing a clamp between the parts of which the blade w 34 is held bymeans of a clamping-screw 39,

the socket ofthe clamp being dove-tailed or grooved and the blade beingcorrespondingly formed.

At one side the wall of the socket 32 is provided with an elongated slot40 through 12 by the link which extends a screw 41 secured to the holder32; and the forward end of the lever 23 is provided with an elongatedslot 42 for engaging the screw ll. From this construction it will beseen that while the eccentric strap 2(Sis constantly operatingv ormoving during the operation of the machine, thus imparting motion to thetrimmer-holder and blade, still, by manipulating the lever 23 anddepressing the forward end thereof, the trimmer-blade maybe depressedbelow the cloth-plate 2 and out of operative position, the position ofthe lever 23'de-.

termining the position of the trimmerof which cooperates with thenotches .48,

and 49 in the bottom edge of the bar 45.

From this construction it will be seen that when the bar 45 is in itsextreme forward position. shown inFig. 4, and the post 47 is seated inthe notch 49, the trimmer-blade is rigidly held in operative positionand by the rotation of the eccentric 27 and the ac-,

tuation of the strap 26 thereby, the trinlmer-blade will be caused totrim the work.

\Vhen, however, the bar 15 is thrown to .the opposite eXtreme,-as bylifting the same and bringing the notch 48 into coiiperation with thepost 47,-the trimmer-holder will be depressed in the socket 32 of theeccentric strap 36 and the trimmer-blade will be thrown out of operationor operative pos1- tion and this without affecting the operation of themachine or modifying theaction thereof in any particular or any of theusual operating parts The trimmer is formed as usual with the beveledside inclined cutting-edge 50 and the finger 51 which guides the bladeinto proper cotiperative and functional relation with a member 52operating as a ledgerblade secured to the side of the presser-foot shank17, as shown in detail in Fig. 7. In

this figure the shank of the foot is provided with a transverse bore inwhich is sets,

a sleeve 53 held in place by the screw 54.

passin'g'through the top of the foot shank and engaging said sleeve.secured to its forward'en'd a head 55 which is longitudinallyslotted-and grooved for the reception of the 'ledgei blade 52. Aset-screw 5.6 screws into and through the sleeve 53 and has its forwardend engaging 'The sleeve has the back of the ledger-blade so asto pressthe latter forward into binding engagement with the opposite members 57forming the front wall of the head 55. Thus, the ledgerblade can beadjusted and removed and can be set into proper coiiperation with thetrimmer-blade 84.

Instead of relying upon gravity to hold the adjustment given the bar 45,a bowedsp-rinzg 57 is fixed to'the post 47 with its ends extendingupwardly and having said endssiightly over-turned so as to cotiperatewith pins 58 projecting from the side of the bar 45. Thus, when eitherof the notches is set in coiiperation with the post 47 the spring willhold the adjustment as an aid to gravity; and when the bar is lifted itis against the normal tension of the spring to hold the bardown.

From the above description a detailed statement of the operation of themachine will not be necessary, it being obvious that if the trimming andsewing are to be begun simultaneously, the trimming mechanism will bethrown into the position of Fig. 4:;

and that when the point in the work has been reached where'trimming isno longer and the operator usually stops the machine and uses a pair ofscissors. This isnot necessary with my trimming mechanism since when itis desired to cut the tape the trimmer-blade 34 can be thrown intooperation, as described, if it is not already in operation and the tapeturned in the path of movement thereof, thus qnickly cutting the tapeatthe point desired. "Ordinarily, the application of the tape and thetrimming of the material proceeds simultaneously; hence, when it isdesired to cut the tape the trimmer is in action, and may be continuedin action or instantly thereafter thrown out of action.

Having thus described my invention what I claim and desire to secure byLetters Patcut is: v

1. A trimming mechanism for sewing chines comprising atrimmenholderlocated below the workplate of the machine and carrying a trimmer-blade;ameans for supportin and also for actuating the holder also locatedbelow the work-plate; and means connected to the supporting andactuating 'means for moving the holder independently of the lattermeans.

2. A trimming mechanism for sewing machines comprising a trimmer-holdercarryle'ver carried by the said tion between the lever and holderwhereby ing a trimmer-blade; a means for supporting and also foractuating the holder; and means for actuating the holder independ entlyof its supporting and actuating means, including a rock-shaft,manualmeans for actuating the shaft, and a link connect-v ed tothe shaft andholder.

3. A trimming mechanism for sewing ma"- ohines comprising atrimmer-holder carrying a trimmer-blade; a means for supportingv andalso for actuating the holder; a

means; a connecthe latter may be shifted independently of its support;and means for actuating the lever.

4 A trimming mechanism for sewing machines comprising a trimmer-holder,a constantly vibrating member in which said holder may slide, a leverpivotally support- .ed on said member, .an operative connection betweensaid holder and-lever, and means whereby the lever may be actuated tocontrol the position of the holder regardless of the action of saidmember.

5. A trimming machine comprising a trimmer-holder, a constantlyvibrating member for actuating said holder, a lever pivoted for movementrelatively to said member, a. connection between said lever and saidholder, means whereby the lever may bennanipulated to control the actionof the holder without disturbing the action of the vibrating member, allsaid parts being arranged and operating below the work-plate of themachine, a trimmer secured in said holder, whereby the trimmer may bedepressed below the work-plate out of operative position, and a memberoperat said trimmer.

trimmer-holder, a member for supporting the holder and relatively towhich the holder may reciprocate, a lever carried by the member andoperatively connected to the holder, means for actuating the member tooperate the holder and independent means 'forac tuating the lever-tocontrol the operation of the holder. 1

7. A trimming machine comprising a reciprocating trimmer-blade arrangedbelow the workfplate, a member operating as a ledger-blade forcooperating with said trimmer blade and arranged above the work plate,means for adjustably supporting the ledger-blade, means for adjustablysupporting the trimmer-blade, and means for throwing the trimmer-bladeinto and out of cooperative relation with the ledger-blade at the willof the operator.

- 8. A trimming mechanism comprising a trimmer-holder and means forcontrolling ing as a ledger blade for co6perating with the sa-merthelatter comprising a rock-shaft,

a vibratory lever and a. hand manipulating bar, a connection between therock-shaft and the lever, a connection between the lever and 5 theholder, and a) connection between the rook-shaft and the bar.

'9. A trimming mechanism comprising a trimmer-holder, means foractuating the same, and means for controlling the posi- 0 tion of theholder including a vibratory lever, a rock-shaft, an arm and linkconnecscribing witnesses.

a tions between the shaft and lever, a sliding signed my name n thepresence of two sub- Witnesses: I f

. WILLIAM Y. S'WENAR'ro w,

EDWARD L. R ssELL.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. O.

